that's where president obama and mitt romney will face off on stage. one moderator, jim leher the moderator. >>> also, in this half hour, in this first half, a new showdown is heating up. a tree that almost killed, well, mcsteamy as you know him from "grey's anatomy." a tree fell on her from the next door neighbor's yard. a big legal battle brewing. >>> first, we're going to get to the latest trouble for american airlines. a story we first brought you on "good morning america." another flight was forced to make an emergency landing last night. and abc's jim avila has been tracking all of the developments. jim, good morning. >> reporter: good morning, elizabeth. american pilots could be at the bargaining table as early as today. bringing to an end, the problems for the airline. this morning, the embattled american airlines under the microscope again. >> i have a gear unsafe flight. >> reporter: another american flight forced to make an emergency landing after an apparent mid-flight maintenance issue. flight 1862, travelling from dallas to st. louis tues